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Ultraviolet (UV) viscosity-reducing composition as well as UV viscosity-reducing film and preparation method thereof

A composition and film technology, applied in the direction of film/sheet adhesives, non-polymer adhesive additives, adhesives, etc., can solve the problems of residue, contamination by the attached object, etc., to achieve high production efficiency, easy The effect of peeling and simple operation process

Inactive Publication Date: 2018-07-13
SUZHOU CHENGBANG DALI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current UV anti-adhesive protective film is generally stored for about 3 months, and the small molecules in the adhesive layer will migrate to the surface of the adhesive layer. Although the adhesive force becomes smaller after UV irradiation during later peeling, the small molecules in the adhesive layer Will remain on the surface of the bonded object, causing pollution to the bonded object

Method used

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  • Ultraviolet (UV) viscosity-reducing composition as well as UV viscosity-reducing film and preparation method thereof
  • Ultraviolet (UV) viscosity-reducing composition as well as UV viscosity-reducing film and preparation method thereof

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Embodiment 1

[0061] The UV viscosity-reducing composition described in the present embodiment, the raw material composition is as follows:

[0062] 40g acrylic pressure-sensitive adhesive resin (manufacturer: Shanghai Toyo Ink Manufacturing Co., Ltd., model: STS0119OP), 20g multifunctional oligomer (manufacturer: Huayao Chemical (Wuxi) Co., Ltd., model: UX-8620W), 1g Crosslinking agent (manufacturer: Bayer, Germany, model: N3390), 1g of azobisisoheptanonitrile, 5g of 2,4,6-(trimethylbenzoyl)-diphenylphosphine oxide (TPO), 33 g of butanone.

[0063] Wherein, the average molecular weight of the STS0119OP is 600,000, the solid content is 25%, and the viscosity is 10,000 cps. The UX-8620W is an aliphatic urethane acrylate oligomer.

Embodiment 2

[0065] The UV viscosity-reducing composition described in the present embodiment, the raw material composition is as follows:

[0066] 40g acrylic pressure-sensitive adhesive resin (manufacturer: Shanghai Toyo Ink Manufacturing Co., Ltd., model: STS0119OP), 20g multifunctional oligomer (manufacturer: Huayao Chemical (Wuxi) Co., Ltd., model: UX-8620W), 1g Crosslinking agent (manufacturer: Bayer, Germany, model: N3390), 1.5g of azobisisoheptanonitrile, 5g of 2,4,6-(trimethylbenzoyl)-diphenylphosphine oxide (TPO) , 32.5 g of butanone.

Embodiment 3

[0068] The UV viscosity-reducing composition described in the present embodiment, the raw material composition is as follows:

[0069] 40g acrylic pressure-sensitive adhesive resin (manufacturer: Shanghai Toyo Ink Manufacturing Co., Ltd., model: STS0119OP), 20g multifunctional oligomer (manufacturer: Huayao Chemical (Wuxi) Co., Ltd., model: UX-8620W), 1g Crosslinking agent (manufacturer: Bayer, Germany, model: N3390), 2g of azobisisoheptanonitrile, 5g of 2,4,6-(trimethylbenzoyl)-diphenylphosphine oxide (TPO), 32 g of butanone.

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Abstract

The invention relates to the technical field of protective films, in particular to an ultraviolet (UV) viscosity-reducing composition as well as a UV viscosity-reducing film and a preparation method thereof. The UV viscosity-reducing composition is mainly prepared from the following raw materials by weight percent: 20-50% of acrylate pressure-sensitive adhesive resin, 1-30% of a polyfunctional oligomer and / or a polyfunctional monomer, 0.3-2% of a cross-linking agent, 0.1-5% of a thermal initiator, 0.5-5% of a photoinitiator and 25-60% of a solvent. The UV viscosity-reducing film comprises a base material layer, a UV viscosity-reducing layer and a release film layer which are sequentially stacked, wherein the UV viscosity-reducing layer is formed by coating the surface of the base materiallayer with the UV viscosity-reducing composition, drying and curing. The UV viscosity-reducing composition has excellent bonding force; before being irradiated with UV, the UV viscosity-reducing composition has high bonding force and stripping force; after being irradiated with UV, the UV viscosity-reducing composition has low bonding force and stripping force; furthermore, after being stored fora long time, the UV viscosity-reducing composition has no residual glue.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to a UV viscous reducing composition, a UV viscous reducing film and a preparation method thereof. Background technique [0002] In the semiconductor manufacturing process, when cutting and polishing semiconductor wafers, in order to reduce the defect density of silicon thin layers, wafer cutting and adhesion-reducing protective films are often used. Anti-adhesive protective film means that the adhesive force is strong when it is used, and the adhesive force is weakened for peeling in the later peeling process. [0003] At present, most of the anti-adhesive protective films on the market are UV anti-adhesive protective films, which means that they have high adhesive force and good adhesion before UV irradiation, and the adhesive force decreases significantly after UV irradiation and is easy to peel off. In the domestic market, most of the UV viscosifying adhesives used for...

Claims

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Application Information

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IPC IPC(8): C09J7/25C09J7/38C09J133/00C09J11/06
CPCC09J11/06C09J133/00C09J2465/005C09J2467/006C09J2301/122C09J2301/302C09J2301/408
Inventor 闫勇陈伟
Owner SUZHOU CHENGBANG DALI MATERIAL TECH
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